# A certain sound wave in air has a speed 340 m/s and wavelength 1.7 m for this wave, calculate a) the frequency b) the period.

After going through the question, we can list the data as

velocity v= 340m/s

wavelength λ = 1.7m

**To find **a) frequency n = ?

b) period T = ?

**Solution –**

velocity can be written as

v = n x λ

n = v / λ

n = 340 / 1.7 = **200 Hz **

Also,

Time Period T = 1/n

T = 1/ 200 = **0.005 s **